Model
Sharp SDW6735DNS
Rank #390 means 389 of the 709 dishwasher models we track cost less to run each year; the 84th efficiency percentile means it uses less energy for its size than 84% of those models.
What does the Sharp SDW6735DNS cost to run per year?
The Sharp SDW6735DNS costs about $45 a year to run, a fairly typical figure for the class; it ranks #390 of 709. It uses 21.8% less energy than the U.S. federal standard model in its class, which would cost about $57/yr to run, a saving of roughly $12 a year. Its size-adjusted efficiency percentile of 84 means the low running cost is not just a function of size; it is genuinely efficient for its class. This class has no published efficiency-factor figure beyond annual kWh itself, so at 16 place settings (the class spans 2 to 18), size is the clearest lever we can point to for this model's running cost.
Immediately around it on the leaderboard, the Sharp SDW6726M* at $45/yr runs a little cheaper and the Sharp SDW6736M* at $45/yr runs a little more, a sense of how tightly models are packed at this point in the ranking. A dishwasher typically stays in service for somewhere around 9 years; over that span, the Sharp SDW6735DNS's $45/yr adds up to roughly $405 in electricity alone, before purchase price or repairs.
Also sold as: Bosch SHE55EM**.
By the numbers
The Sharp SDW6735DNS normalized against its whole class, so each figure means something.
What it costs you over time
Running cost is an every-year number, so it compounds. At $45/yr, here is what the Sharp SDW6735DNS adds up to before purchase price, water, or repairs enter the math.
Left running for a decade at today's US average rate, the Sharp SDW6735DNS costs about $450. That is roughly $120 less than a standard model in its class, which would run closer to $570 over the same ten years.
How the Sharp SDW6735DNS compares
The dishwasher class we track runs from $15 to $45 a year. At $45/yr, it runs about $1 a year above the class median of $44, and it is about $30 a year more than the cheapest dishwasher to run at $15. Against the US federal standard model for its class at about $57/yr, the Sharp SDW6735DNS uses 21.8% less energy.
What drives its running cost
At 16 place settings, the Sharp SDW6735DNS is a large dishwasher for its class, which spans 2 to 18 place settings with a median of 14 place settings, size is usually the single biggest lever behind a running-cost figure, and at this end of the range there is more capacity to service, which tends to push the number up.
- Place-setting capacity. Place-setting capacity is the main driver of how much water a cycle has to heat, and heating that water is most of a dishwasher's electricity use.
- Water heating. Most dishwashers have a booster heater that raises incoming water to sanitizing temperature; this heating step, not the pump or motor, accounts for most of a cycle's electricity use.
- Cycle length and drying method. Heavy or sanitize cycles run longer and hotter than a normal or eco cycle, and heated-dry options cost more to run than air-dry or condensation drying.
Common questions
Is the Sharp SDW6735DNS cheap to run?
Roughly, yes. Its $45/yr figure is close to the class median, ranking #390 of 709, neither a bargain nor a splurge on running cost.
How much does the Sharp SDW6735DNS cost per month?
About $3.71 a month, which is the $45 annual estimate spread across twelve months at the US average rate of $0.1856/kWh. Your own bill scales with your local electricity rate and how heavily you use it.
How is this running-cost figure calculated?
The formula is annual kWh times price per kWh: 240 kWh from ENERGY STAR times the US average of $0.1856/kWh comes to about $45 a year. It covers electricity only, not the purchase price, water, or installation.
How efficient is the Sharp SDW6735DNS for its size?
84th percentile once size is factored in, a fairly typical result for the class.
Cheaper to run in the same class
Source
ES_41229_SDW6735DNS_120120250156628_8029517View certified dishwasher listingsENERGY STAR data as of July 2026Sharp and SDW6735DNS are used here for identification only and are not endorsements. Figures are computed by WattWise Labs from public ENERGY STAR data, not measured in our own lab.